./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:54:53,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:54:53,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:54:53,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:54:53,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:54:53,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:54:53,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:54:53,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:54:53,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:54:53,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:54:53,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:54:53,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:54:53,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:54:53,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:54:53,526 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:54:53,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:54:53,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:54:53,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:54:53,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:54:53,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:54:53,528 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:54:53,529 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:54:53,530 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:54:53,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:54:53,530 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:54:53,530 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:54:53,531 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:54:53,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:54:53,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:54:53,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:54:53,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:54:53,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:54:53,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:54:53,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:53,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:54:53,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:54:53,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:54:53,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:54:53,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:54:53,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:54:53,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:54:53,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:54:53,535 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-10-14 19:54:53,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:54:53,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:54:53,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:54:53,836 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:54:53,837 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:54:53,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-14 19:54:55,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:54:55,479 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:54:55,480 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-14 19:54:55,487 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e050c473/8adea83a4fbf40d0a394a951d5992cd8/FLAGc74f6faf5 [2024-10-14 19:54:55,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e050c473/8adea83a4fbf40d0a394a951d5992cd8 [2024-10-14 19:54:55,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:54:55,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:54:55,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:55,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:54:55,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:54:55,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:55" (1/1) ... [2024-10-14 19:54:55,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce8c5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:55, skipping insertion in model container [2024-10-14 19:54:55,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:55" (1/1) ... [2024-10-14 19:54:55,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:55,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:55,726 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:54:55,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6d10e7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:55, skipping insertion in model container [2024-10-14 19:54:55,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:55,727 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:54:55,729 INFO L158 Benchmark]: Toolchain (without parser) took 222.27ms. Allocated memory is still 134.2MB. Free memory was 80.1MB in the beginning and 69.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:54:55,729 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 134.2MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:54:55,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.99ms. Allocated memory is still 134.2MB. Free memory was 79.9MB in the beginning and 69.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:54:55,731 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 134.2MB. Free memory is still 106.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.99ms. Allocated memory is still 134.2MB. Free memory was 79.9MB in the beginning and 69.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 104]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:54:57,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:54:57,779 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:54:57,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:54:57,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:54:57,818 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:54:57,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:54:57,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:54:57,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:54:57,823 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:54:57,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:54:57,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:54:57,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:54:57,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:54:57,824 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:54:57,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:54:57,827 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:54:57,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:54:57,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:54:57,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:54:57,828 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:54:57,829 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:54:57,829 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:54:57,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:54:57,829 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:54:57,830 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:54:57,830 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:54:57,830 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:54:57,830 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:54:57,830 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:54:57,831 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:54:57,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:54:57,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:54:57,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:54:57,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:54:57,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:57,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:54:57,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:54:57,838 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:54:57,838 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:54:57,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:54:57,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:54:57,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:54:57,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:54:57,839 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:54:57,839 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-10-14 19:54:58,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:54:58,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:54:58,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:54:58,180 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:54:58,183 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:54:58,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-14 19:54:59,699 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:54:59,908 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:54:59,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-14 19:54:59,922 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34db76a5d/b88011738460448b8e4fa9638df2660c/FLAG09cee7a8c [2024-10-14 19:54:59,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34db76a5d/b88011738460448b8e4fa9638df2660c [2024-10-14 19:54:59,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:54:59,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:54:59,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:59,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:54:59,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:54:59,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:59" (1/1) ... [2024-10-14 19:54:59,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5c5f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:59, skipping insertion in model container [2024-10-14 19:54:59,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:59" (1/1) ... [2024-10-14 19:54:59,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:55:00,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:00,215 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:55:00,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:55:00,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:00,251 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:55:00,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:00,304 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:55:00,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00 WrapperNode [2024-10-14 19:55:00,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:55:00,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:55:00,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:55:00,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:55:00,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,357 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 178 [2024-10-14 19:55:00,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:55:00,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:55:00,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:55:00,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:55:00,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,405 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:55:00,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:55:00,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:55:00,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:55:00,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:55:00,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (1/1) ... [2024-10-14 19:55:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:55:00,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:55:00,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:55:00,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:55:00,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:55:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:55:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:55:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:55:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:55:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:55:00,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:55:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:55:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:55:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:55:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:55:00,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:55:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:55:00,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:55:00,540 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:55:00,678 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:55:00,680 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:55:01,148 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:55:01,150 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:55:01,501 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:55:01,502 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 19:55:01,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:55:01 BoogieIcfgContainer [2024-10-14 19:55:01,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:55:01,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:55:01,506 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:55:01,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:55:01,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:54:59" (1/3) ... [2024-10-14 19:55:01,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca12614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:55:01, skipping insertion in model container [2024-10-14 19:55:01,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:00" (2/3) ... [2024-10-14 19:55:01,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca12614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:55:01, skipping insertion in model container [2024-10-14 19:55:01,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:55:01" (3/3) ... [2024-10-14 19:55:01,513 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-10-14 19:55:01,529 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:55:01,529 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-14 19:55:01,530 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:55:01,587 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 19:55:01,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 109 flow [2024-10-14 19:55:01,656 INFO L124 PetriNetUnfolderBase]: 4/41 cut-off events. [2024-10-14 19:55:01,656 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-14 19:55:01,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 4/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-14 19:55:01,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 44 transitions, 109 flow [2024-10-14 19:55:01,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 40 transitions, 98 flow [2024-10-14 19:55:01,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:55:01,687 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11a752a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:55:01,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-14 19:55:01,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:55:01,692 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:55:01,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:55:01,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:01,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:55:01,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:01,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:01,699 INFO L85 PathProgramCache]: Analyzing trace with hash 596647, now seen corresponding path program 1 times [2024-10-14 19:55:01,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:01,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711075561] [2024-10-14 19:55:01,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:01,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:01,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:01,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:01,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:55:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:01,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:55:01,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:01,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:55:01,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:01,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:01,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:01,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711075561] [2024-10-14 19:55:01,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711075561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:01,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:01,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:55:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219656155] [2024-10-14 19:55:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:01,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:55:01,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:55:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:55:01,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:01,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:01,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:01,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:01,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:02,417 INFO L124 PetriNetUnfolderBase]: 1316/1925 cut-off events. [2024-10-14 19:55:02,417 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-14 19:55:02,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3938 conditions, 1925 events. 1316/1925 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9745 event pairs, 1060 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 3632. Up to 1877 conditions per place. [2024-10-14 19:55:02,439 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 30 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-14 19:55:02,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 156 flow [2024-10-14 19:55:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:55:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:55:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-14 19:55:02,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-10-14 19:55:02,454 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 98 flow. Second operand 3 states and 61 transitions. [2024-10-14 19:55:02,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 156 flow [2024-10-14 19:55:02,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 144 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:55:02,468 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 84 flow [2024-10-14 19:55:02,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-10-14 19:55:02,476 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-10-14 19:55:02,477 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 84 flow [2024-10-14 19:55:02,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:02,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:02,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:55:02,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:02,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:02,680 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:02,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:02,681 INFO L85 PathProgramCache]: Analyzing trace with hash 596648, now seen corresponding path program 1 times [2024-10-14 19:55:02,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:02,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938236329] [2024-10-14 19:55:02,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:02,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:02,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:02,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:02,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:55:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:02,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:55:02,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:02,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:02,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:02,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:02,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938236329] [2024-10-14 19:55:02,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938236329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:02,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:02,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:55:02,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642305802] [2024-10-14 19:55:02,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:02,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:55:02,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:02,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:55:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:55:02,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:02,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:02,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:02,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:02,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:03,340 INFO L124 PetriNetUnfolderBase]: 1317/1928 cut-off events. [2024-10-14 19:55:03,341 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:55:03,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 1928 events. 1317/1928 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9772 event pairs, 1060 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 3838. Up to 1882 conditions per place. [2024-10-14 19:55:03,353 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 32 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-10-14 19:55:03,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 164 flow [2024-10-14 19:55:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:55:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:55:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-14 19:55:03,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-10-14 19:55:03,356 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 84 flow. Second operand 4 states and 73 transitions. [2024-10-14 19:55:03,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 164 flow [2024-10-14 19:55:03,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:55:03,358 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 107 flow [2024-10-14 19:55:03,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-10-14 19:55:03,359 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2024-10-14 19:55:03,360 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 107 flow [2024-10-14 19:55:03,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:03,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:03,360 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:55:03,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:55:03,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:03,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:03,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:03,562 INFO L85 PathProgramCache]: Analyzing trace with hash 573396854, now seen corresponding path program 1 times [2024-10-14 19:55:03,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:03,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315334771] [2024-10-14 19:55:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:03,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:03,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:03,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:55:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:03,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:55:03,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:03,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:03,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:04,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:04,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315334771] [2024-10-14 19:55:04,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315334771] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:04,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:04,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:55:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641058387] [2024-10-14 19:55:04,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:04,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:55:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:04,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:55:04,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:55:04,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:04,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 107 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:04,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:04,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:04,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:04,910 INFO L124 PetriNetUnfolderBase]: 1320/1937 cut-off events. [2024-10-14 19:55:04,910 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:55:04,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 1937 events. 1320/1937 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9851 event pairs, 1060 based on Foata normal form. 0/1379 useless extension candidates. Maximal degree in co-relation 3845. Up to 1885 conditions per place. [2024-10-14 19:55:04,921 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 32 selfloop transitions, 13 changer transitions 0/49 dead transitions. [2024-10-14 19:55:04,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 233 flow [2024-10-14 19:55:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:55:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:55:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-10-14 19:55:04,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31363636363636366 [2024-10-14 19:55:04,926 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 107 flow. Second operand 10 states and 138 transitions. [2024-10-14 19:55:04,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 233 flow [2024-10-14 19:55:04,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:55:04,928 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2024-10-14 19:55:04,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-14 19:55:04,931 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-10-14 19:55:04,931 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2024-10-14 19:55:04,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:04,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:04,932 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:55:04,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:55:05,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:05,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:05,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash 597915046, now seen corresponding path program 1 times [2024-10-14 19:55:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991058912] [2024-10-14 19:55:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:05,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:05,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:05,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:05,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:55:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:05,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:55:05,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:05,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:55:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:05,226 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:05,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:05,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991058912] [2024-10-14 19:55:05,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991058912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:05,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:05,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:55:05,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104710270] [2024-10-14 19:55:05,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:05,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:55:05,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:05,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:55:05,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:55:05,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:05,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:05,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:05,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:05,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:05,469 INFO L124 PetriNetUnfolderBase]: 796/1183 cut-off events. [2024-10-14 19:55:05,469 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-14 19:55:05,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 1183 events. 796/1183 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5343 event pairs, 608 based on Foata normal form. 0/968 useless extension candidates. Maximal degree in co-relation 2377. Up to 1138 conditions per place. [2024-10-14 19:55:05,477 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 35 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-10-14 19:55:05,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 260 flow [2024-10-14 19:55:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:55:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:55:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-14 19:55:05,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-10-14 19:55:05,480 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 4 states and 68 transitions. [2024-10-14 19:55:05,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 260 flow [2024-10-14 19:55:05,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 230 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:55:05,482 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 160 flow [2024-10-14 19:55:05,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-14 19:55:05,483 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-10-14 19:55:05,484 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 160 flow [2024-10-14 19:55:05,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:05,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:05,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:55:05,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:55:05,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:05,685 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:05,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash 597915047, now seen corresponding path program 1 times [2024-10-14 19:55:05,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:05,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254194124] [2024-10-14 19:55:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:05,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:05,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:05,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:05,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:55:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:05,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:55:05,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:05,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:05,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:05,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:05,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254194124] [2024-10-14 19:55:05,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254194124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:05,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:05,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:55:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074314568] [2024-10-14 19:55:05,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:05,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:55:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:55:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:55:05,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:05,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:05,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:05,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:05,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:06,535 INFO L124 PetriNetUnfolderBase]: 1582/2271 cut-off events. [2024-10-14 19:55:06,536 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 19:55:06,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4608 conditions, 2271 events. 1582/2271 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10873 event pairs, 614 based on Foata normal form. 0/1831 useless extension candidates. Maximal degree in co-relation 4577. Up to 1409 conditions per place. [2024-10-14 19:55:06,551 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 65 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-10-14 19:55:06,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 388 flow [2024-10-14 19:55:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:55:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:55:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-10-14 19:55:06,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-10-14 19:55:06,554 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 160 flow. Second operand 6 states and 121 transitions. [2024-10-14 19:55:06,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 388 flow [2024-10-14 19:55:06,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:55:06,557 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 210 flow [2024-10-14 19:55:06,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-10-14 19:55:06,559 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-10-14 19:55:06,559 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 210 flow [2024-10-14 19:55:06,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:06,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:06,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:06,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:55:06,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:06,761 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:06,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash -930457386, now seen corresponding path program 1 times [2024-10-14 19:55:06,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:06,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051192251] [2024-10-14 19:55:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:06,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:06,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:06,766 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:06,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:55:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:06,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:55:06,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:06,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:07,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:07,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:07,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051192251] [2024-10-14 19:55:07,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051192251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:07,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:07,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:55:07,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599780714] [2024-10-14 19:55:07,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:07,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:55:07,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:07,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:55:07,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:55:07,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:07,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:07,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:07,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:07,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:08,038 INFO L124 PetriNetUnfolderBase]: 3041/4303 cut-off events. [2024-10-14 19:55:08,038 INFO L125 PetriNetUnfolderBase]: For 1338/1475 co-relation queries the response was YES. [2024-10-14 19:55:08,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10391 conditions, 4303 events. 3041/4303 cut-off events. For 1338/1475 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21180 event pairs, 1261 based on Foata normal form. 191/4066 useless extension candidates. Maximal degree in co-relation 10357. Up to 2636 conditions per place. [2024-10-14 19:55:08,068 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 73 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-10-14 19:55:08,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 522 flow [2024-10-14 19:55:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:55:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:55:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-10-14 19:55:08,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45075757575757575 [2024-10-14 19:55:08,071 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 210 flow. Second operand 6 states and 119 transitions. [2024-10-14 19:55:08,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 522 flow [2024-10-14 19:55:08,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 501 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:55:08,078 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 269 flow [2024-10-14 19:55:08,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-10-14 19:55:08,080 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2024-10-14 19:55:08,081 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 269 flow [2024-10-14 19:55:08,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:08,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:08,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:08,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-14 19:55:08,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:08,283 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:08,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1258395232, now seen corresponding path program 1 times [2024-10-14 19:55:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:08,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881389786] [2024-10-14 19:55:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:08,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:08,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:08,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:08,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:55:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:08,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:55:08,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:08,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:08,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:08,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:08,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:08,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881389786] [2024-10-14 19:55:08,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881389786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:08,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:08,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:55:08,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559539183] [2024-10-14 19:55:08,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:08,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:55:08,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:55:08,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:55:08,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-14 19:55:08,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:08,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:08,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-14 19:55:08,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:09,282 INFO L124 PetriNetUnfolderBase]: 2965/4390 cut-off events. [2024-10-14 19:55:09,283 INFO L125 PetriNetUnfolderBase]: For 3725/4096 co-relation queries the response was YES. [2024-10-14 19:55:09,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 4390 events. 2965/4390 cut-off events. For 3725/4096 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 23210 event pairs, 1967 based on Foata normal form. 373/4647 useless extension candidates. Maximal degree in co-relation 12300. Up to 3813 conditions per place. [2024-10-14 19:55:09,314 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 73 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-10-14 19:55:09,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 503 flow [2024-10-14 19:55:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:55:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:55:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-10-14 19:55:09,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-10-14 19:55:09,316 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 269 flow. Second operand 5 states and 114 transitions. [2024-10-14 19:55:09,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 503 flow [2024-10-14 19:55:09,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:55:09,321 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 311 flow [2024-10-14 19:55:09,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-10-14 19:55:09,322 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-10-14 19:55:09,322 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 311 flow [2024-10-14 19:55:09,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:09,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:09,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:09,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:09,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:09,523 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:09,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash -823240124, now seen corresponding path program 1 times [2024-10-14 19:55:09,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:09,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062748985] [2024-10-14 19:55:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:09,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:09,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:09,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:09,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:55:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:09,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:55:09,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:09,678 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:09,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:09,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062748985] [2024-10-14 19:55:09,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062748985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:09,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:09,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:55:09,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289137209] [2024-10-14 19:55:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:09,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:55:09,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:09,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:55:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:55:09,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:09,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:09,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:09,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:09,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:10,457 INFO L124 PetriNetUnfolderBase]: 3459/4933 cut-off events. [2024-10-14 19:55:10,458 INFO L125 PetriNetUnfolderBase]: For 8248/8702 co-relation queries the response was YES. [2024-10-14 19:55:10,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16017 conditions, 4933 events. 3459/4933 cut-off events. For 8248/8702 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 24415 event pairs, 2384 based on Foata normal form. 306/4883 useless extension candidates. Maximal degree in co-relation 15979. Up to 4510 conditions per place. [2024-10-14 19:55:10,501 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 70 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2024-10-14 19:55:10,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 535 flow [2024-10-14 19:55:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:55:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:55:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-10-14 19:55:10,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-10-14 19:55:10,504 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 311 flow. Second operand 5 states and 102 transitions. [2024-10-14 19:55:10,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 535 flow [2024-10-14 19:55:10,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:55:10,511 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 331 flow [2024-10-14 19:55:10,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-14 19:55:10,512 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-10-14 19:55:10,512 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 331 flow [2024-10-14 19:55:10,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:10,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:10,513 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:55:10,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:55:10,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:10,714 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:10,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1820481312, now seen corresponding path program 2 times [2024-10-14 19:55:10,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:10,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744474818] [2024-10-14 19:55:10,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:55:10,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:10,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:10,716 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:10,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:55:10,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:55:10,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:55:10,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:55:10,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:10,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:11,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:11,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744474818] [2024-10-14 19:55:11,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744474818] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:11,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:11,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:55:11,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932997736] [2024-10-14 19:55:11,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:11,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:55:11,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:11,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:55:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:55:11,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:11,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 331 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:11,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:11,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:11,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:14,241 INFO L124 PetriNetUnfolderBase]: 2879/4291 cut-off events. [2024-10-14 19:55:14,242 INFO L125 PetriNetUnfolderBase]: For 7778/8192 co-relation queries the response was YES. [2024-10-14 19:55:14,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 4291 events. 2879/4291 cut-off events. For 7778/8192 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22624 event pairs, 1973 based on Foata normal form. 266/4373 useless extension candidates. Maximal degree in co-relation 14165. Up to 3924 conditions per place. [2024-10-14 19:55:14,279 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 43 selfloop transitions, 31 changer transitions 0/80 dead transitions. [2024-10-14 19:55:14,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 80 transitions, 575 flow [2024-10-14 19:55:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:55:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:55:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 264 transitions. [2024-10-14 19:55:14,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-10-14 19:55:14,285 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 331 flow. Second operand 22 states and 264 transitions. [2024-10-14 19:55:14,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 80 transitions, 575 flow [2024-10-14 19:55:14,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:55:14,299 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 514 flow [2024-10-14 19:55:14,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=514, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-10-14 19:55:14,300 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-10-14 19:55:14,301 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 514 flow [2024-10-14 19:55:14,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:14,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:14,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:14,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-14 19:55:14,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:14,502 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:14,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash -917733202, now seen corresponding path program 1 times [2024-10-14 19:55:14,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:14,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516648478] [2024-10-14 19:55:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:14,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:14,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:14,504 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:14,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:55:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:14,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:55:14,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:14,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:14,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:15,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516648478] [2024-10-14 19:55:15,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516648478] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:15,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:15,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:55:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378178120] [2024-10-14 19:55:15,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:15,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:55:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:55:15,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:55:15,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:15,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 514 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:15,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:15,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:15,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:17,947 INFO L124 PetriNetUnfolderBase]: 6247/8785 cut-off events. [2024-10-14 19:55:17,948 INFO L125 PetriNetUnfolderBase]: For 10960/11599 co-relation queries the response was YES. [2024-10-14 19:55:17,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29283 conditions, 8785 events. 6247/8785 cut-off events. For 10960/11599 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 44459 event pairs, 1139 based on Foata normal form. 638/9315 useless extension candidates. Maximal degree in co-relation 29225. Up to 2351 conditions per place. [2024-10-14 19:55:18,020 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 236 selfloop transitions, 32 changer transitions 2/275 dead transitions. [2024-10-14 19:55:18,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 275 transitions, 1943 flow [2024-10-14 19:55:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 19:55:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 19:55:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 305 transitions. [2024-10-14 19:55:18,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5332167832167832 [2024-10-14 19:55:18,024 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 514 flow. Second operand 13 states and 305 transitions. [2024-10-14 19:55:18,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 275 transitions, 1943 flow [2024-10-14 19:55:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 275 transitions, 1863 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-14 19:55:18,049 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 596 flow [2024-10-14 19:55:18,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=596, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-10-14 19:55:18,052 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2024-10-14 19:55:18,052 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 596 flow [2024-10-14 19:55:18,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:18,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:18,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:18,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:18,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:18,257 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:18,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:18,258 INFO L85 PathProgramCache]: Analyzing trace with hash 436255158, now seen corresponding path program 1 times [2024-10-14 19:55:18,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:18,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074609985] [2024-10-14 19:55:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:18,259 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:18,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:18,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:18,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:55:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:18,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:55:18,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:18,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:18,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:19,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:19,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074609985] [2024-10-14 19:55:19,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074609985] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:19,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:19,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:55:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973767063] [2024-10-14 19:55:19,464 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:19,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:55:19,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:55:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:55:19,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-10-14 19:55:19,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 596 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:19,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:19,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-10-14 19:55:19,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:25,199 INFO L124 PetriNetUnfolderBase]: 19592/27877 cut-off events. [2024-10-14 19:55:25,200 INFO L125 PetriNetUnfolderBase]: For 73938/75459 co-relation queries the response was YES. [2024-10-14 19:55:25,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106647 conditions, 27877 events. 19592/27877 cut-off events. For 73938/75459 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 166510 event pairs, 8590 based on Foata normal form. 1615/27491 useless extension candidates. Maximal degree in co-relation 106589. Up to 7409 conditions per place. [2024-10-14 19:55:25,459 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 284 selfloop transitions, 43 changer transitions 0/336 dead transitions. [2024-10-14 19:55:25,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 336 transitions, 2852 flow [2024-10-14 19:55:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 19:55:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-14 19:55:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 314 transitions. [2024-10-14 19:55:25,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-10-14 19:55:25,463 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 596 flow. Second operand 16 states and 314 transitions. [2024-10-14 19:55:25,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 336 transitions, 2852 flow [2024-10-14 19:55:25,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 336 transitions, 2681 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-10-14 19:55:25,644 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 835 flow [2024-10-14 19:55:25,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=835, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2024-10-14 19:55:25,645 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-14 19:55:25,645 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 835 flow [2024-10-14 19:55:25,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:25,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:25,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:25,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-14 19:55:25,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:25,848 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:25,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 853203654, now seen corresponding path program 1 times [2024-10-14 19:55:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213578771] [2024-10-14 19:55:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:25,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:25,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:25,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:55:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:25,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:55:25,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:25,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:26,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:26,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213578771] [2024-10-14 19:55:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213578771] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:26,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:26,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:55:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831911516] [2024-10-14 19:55:26,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:26,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:55:26,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:55:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:55:26,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:26,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 835 flow. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:26,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:26,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:26,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:33,475 INFO L124 PetriNetUnfolderBase]: 32942/45635 cut-off events. [2024-10-14 19:55:33,475 INFO L125 PetriNetUnfolderBase]: For 160432/169718 co-relation queries the response was YES. [2024-10-14 19:55:33,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188323 conditions, 45635 events. 32942/45635 cut-off events. For 160432/169718 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 271186 event pairs, 6387 based on Foata normal form. 5670/50236 useless extension candidates. Maximal degree in co-relation 188255. Up to 13735 conditions per place. [2024-10-14 19:55:34,089 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 369 selfloop transitions, 37 changer transitions 4/421 dead transitions. [2024-10-14 19:55:34,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 421 transitions, 3984 flow [2024-10-14 19:55:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 19:55:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-14 19:55:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 293 transitions. [2024-10-14 19:55:34,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5122377622377622 [2024-10-14 19:55:34,094 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 835 flow. Second operand 13 states and 293 transitions. [2024-10-14 19:55:34,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 421 transitions, 3984 flow [2024-10-14 19:55:34,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 421 transitions, 3849 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-10-14 19:55:34,400 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 970 flow [2024-10-14 19:55:34,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=970, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2024-10-14 19:55:34,401 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 79 predicate places. [2024-10-14 19:55:34,401 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 970 flow [2024-10-14 19:55:34,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:34,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:34,402 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:34,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-14 19:55:34,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:34,604 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:55:34,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:34,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1450290675, now seen corresponding path program 1 times [2024-10-14 19:55:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:34,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679851668] [2024-10-14 19:55:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:34,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:34,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:34,608 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:34,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-14 19:55:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:34,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-14 19:55:34,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:34,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:55:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:35,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:36,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:36,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679851668] [2024-10-14 19:55:36,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679851668] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:36,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:36,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-14 19:55:36,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991710432] [2024-10-14 19:55:36,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:36,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:55:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:55:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:55:37,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:55:37,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 970 flow. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:37,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:37,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:55:37,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:02,864 INFO L124 PetriNetUnfolderBase]: 90693/124860 cut-off events. [2024-10-14 19:56:02,864 INFO L125 PetriNetUnfolderBase]: For 586427/596842 co-relation queries the response was YES. [2024-10-14 19:56:03,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583314 conditions, 124860 events. 90693/124860 cut-off events. For 586427/596842 co-relation queries the response was YES. Maximal size of possible extension queue 2417. Compared 817613 event pairs, 27422 based on Foata normal form. 7586/122779 useless extension candidates. Maximal degree in co-relation 583241. Up to 39073 conditions per place. [2024-10-14 19:56:04,598 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 719 selfloop transitions, 80 changer transitions 0/813 dead transitions. [2024-10-14 19:56:04,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 813 transitions, 8039 flow [2024-10-14 19:56:04,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-14 19:56:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-14 19:56:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 573 transitions. [2024-10-14 19:56:04,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5008741258741258 [2024-10-14 19:56:04,602 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 970 flow. Second operand 26 states and 573 transitions. [2024-10-14 19:56:04,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 813 transitions, 8039 flow [2024-10-14 19:56:07,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 813 transitions, 7471 flow, removed 133 selfloop flow, removed 5 redundant places. [2024-10-14 19:56:07,672 INFO L231 Difference]: Finished difference. Result has 148 places, 172 transitions, 1757 flow [2024-10-14 19:56:07,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1757, PETRI_PLACES=148, PETRI_TRANSITIONS=172} [2024-10-14 19:56:07,673 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 102 predicate places. [2024-10-14 19:56:07,673 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 172 transitions, 1757 flow [2024-10-14 19:56:07,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:07,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:07,674 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:07,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-14 19:56:07,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:07,874 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-14 19:56:07,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash -786440948, now seen corresponding path program 2 times [2024-10-14 19:56:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669179285] [2024-10-14 19:56:07,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:07,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:07,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:07,876 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:07,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-14 19:56:07,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:56:07,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:07,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:56:07,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:07,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:56:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-14 19:56:08,165 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:08,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:08,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669179285] [2024-10-14 19:56:08,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669179285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:08,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:08,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:56:08,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242243198] [2024-10-14 19:56:08,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:08,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:56:08,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:56:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:56:08,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-14 19:56:08,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 172 transitions, 1757 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:08,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:08,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-14 19:56:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand